According to the "JSON specs":http://json.org/ (emphasis added),[quote]A value can be a string in double quotes, or a number, or true or false or null, or an object or an array.[/quote]http://jsonviewer.stack.hu/ is using non-standard extensions, which other parsers are not guaranteed to provide.

Here is a site which checks if your JSON string is valid or not: http://jsonlint.com/ (I pasted your data into JSON Lint and it failed the test)